A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, a car is complex and there are many reasons why a light may occur. In the event that your glow plug light comes on while driving your Bmw Serie 5, it may possibly show different problems. In this post, we will do everything we can to support you see things more clearly. First, we will see how the preheating light on your Bmw Serie 5 works, and then the different reasons it lights up when you are driving

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What is the goal of my Bmw Serie 5 glow plug light?

The main goal of the engine glow plug light, which is in most cases represented by a yellow coil, is to assure that your glow plugs are working correctly. In fact, it must light up when you switch on your Bmw Serie 5 to tell you that they are heating the intake air in your cylinders and must go out after a few minutes when the engine is running. This preheat light is therefore not expected to stay or come on while driving with your automobile. But, if it comes on while driving, it may show different troubles, we will try to detail the main ones.

What to do if the glow plug light comes on while driving on my Bmw Serie 5?

A glow light that comes on while driving on your Bmw Serie 5 or at any other time other than when the engine is started is meant to inform you to a fault other than your spark plugs, we will look at this now. No matter the reason, a switch to the diagnostic tool will allow you to precisely interpret the motive for the light up of your glow light.

My Bmw Serie 5 glow light comes on and I’m encountering a loss of power

The first situation is that you notice that your glow plug light comes on while driving your Bmw Serie 5 and that you also knowledge a loss of power. In this instance, different concerns can describe its presence. Here is a list of the main reasons:

  • Problem of EGR valve, indeed, if you undergo a loss of power, it is possible that your EGR valve is clogged, in this case, it is logical that your preheat light comes on while driving on Bmw Serie 5 because it is one of the problem of which it is intended to alert you. Have the status of your valve checked
  • Problem associated with the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can bring about turbo boost and a disturbance in the performance of the turbo.
  • Problem linked to the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that disrupt its proper functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Bmw Serie 5 coupled with a loss of power, is that your fuel filter is too dirty, you should experience jerks because of a bad fuel flow in the engine.

My glow plug light comes on or is flashing but no difference on the performance of my Bmw Serie 5

To finish , we’ll give you the reasons for a glow plug light that comes on on your Bmw Serie 5 without you feeling any difference in power or automobile behaviour. Ordinarily, this is an electronic fault:

  • Glow plug relays or fuses to be replaced, test and replace if necessary.
  • A contactor/potentiometer on one of your pedals (brake, accelerator or clutch) has failed, often a simple de-seizure will be enough to resolve the issue.
  • You have a false contact somewhere in your electrical circuit, test the other solutions first because it is not easy to find it alone, we advise you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error

    • In the event that you have any further questions about the Bmw Serie 5, do not hesitate to consult our Bmw Serie 5 category.